Composition of matter for battery boxes



Patented May I 7,

' Ju nmo sATo AND asuunzri SALTO, for, irnoixs olw, MICHIGAN.

oomrosrrron ormar'rnn r03 emma? Boxes.

No Drawing.

The present invention pertains to a novel composition of matter especially adapted'for' use in the manufacture of'storage battery" cases or'boxes and has reference-more partieularly to the use of materials known as gilson ite, Korite, Parolite, elaterite, which are p hydro-carbon binders, combined with silexor 3 silica, anda'. fibrous material, such as asbestos .or asbestos fiber.

A box manufactured according to our in service, to have a longer life, and to ,cost' less to manufacture than abattery boxmade of rubber composition or asbestos according to" present methods of manufacture.

The object of the invention is therefore to provide a chemical combination of 1ngred1-' ents which is more satisiiactory than the rubher or asphalt boxeslnow in use. Such a box has considerable strength owing to the, intimate binding relation between the hydro- I carbons and the fibrous-material.

. ples:

The invention will now be more specifically described with referenceto actual exam- 7 'E'mample 1.

15 parts gilsonite. 5 parts Korite.

-5 parts Parolite.

These substances are melted in three diilere'nt iron vessels under considerable heat. When freely melted, they are m xed together,

- and to this inixturewe add 1 part powdered elaterite.

23 parts silex or finepure silica. i 27 parts asbestos or asbestos fiber.

The Whole mixture is now mixed well While being heated at a high temperature. It is next put into a high grade steel mold having a polished inner surface covered with softsoap, and the mixture is pressed to proper shape by hydraulic pressesin the usual manner.

, smooth and polished surface.

Application filed September a, 1921. Serial no. 218,357.

In connection with the mold, it has been .found that vwhen the mold is vprepared as above described, the product is imparted a v v p EmampZeQ. GilsQni'te, 25 per cent. I 'Korite, 24. per cent. ,Elateri'te, 1'"'per cent.

silex cent. 1 Asbestos '27 per cent." 1

,Igorite' and Paroliteare blown asphalts liaiunga brownish color (see Abrahams Asv Heat rid mix as above and add, ntion 1s found to be more satisfactory in phalts and' Allied Substances, 2d edition-- corrected,,page 289), Elaterite is a some-' whatz-similarsubstance but is black and "has a high'melting point. In so far as an operative-composition is concerned, with respect to the hydrocarbon binders, el'aterite and only i one of the three others are essential, the elaterite being necessary'to produce the desired black colorand to raise-the melting points The body ofthe composition is completedbyv the addition ofasbestosand silex'or'silica.

Although specific embodiments of the iii-1' vention have been described it will be understood thattwe may depart from the. exact quantities given-in the examples Within the 1 scope of the inventionas indicated by the appended claims.

Vhat we claim is: v

1. A' battery box'made of a mixture'of, powderedelaterite; gilsonite; a blown asphalt; silex and asbestos. I

2. A battery box made of a mixture of 1 per cent powderedelaterite; 49 per cent gilsonite and a blown asphalt; 23 per cent silex and 27 per cent asbestos.

In testimony whereof we aflix our signatures, 1 v

JUNJIRO SATO. TSUNAJI SATO. 

